# How do you integrate ln(b/x)dx?

$\int \ln \left(\frac{b}{x}\right) \mathrm{dx} =$
$\int \ln \left(b\right) - \ln \left(x\right) \mathrm{dx} =$
$x \ln \left(b\right) - x \ln \left(x\right) + x + C$